kernel/linux.git/drivers/misc/hpilo.c, branch v6.1.168

misc: hpilo: map iLO shared memory by PCI revision id

2021-06-04T13:28:23+00:00

Starting from iLO ASIC 'Neches' with subsystem device id 0x00E4, bar 5 is used for shared memory region mapping instead of bar 2 because bar 2 is made inaccessible after system POST for security reason. As this holds true for future iLO ASIC generations, it does not make sense to map shared memory region according to the subsystem device id of each following generations. Map iLO shared memory region with PCI revision id that maps to the iLO ASIC generation, starting from Neches (Rev 7). Signed-off-by: Matt Hsiao Link: https://lore.kernel.org/r/20210531085551.26421-1-matt.hsiao@hpe.com Signed-off-by: Greg Kroah-Hartman

misc: hpilo: avoid a useless memset

2020-07-23T10:56:49+00:00

Avoid a memset after a call to 'dma_alloc_coherent()'. This is useless since commit 518a2f1925c3 ("dma-mapping: zero memory returned from dma_alloc_*") Signed-off-by: Christophe JAILLET Link: https://lore.kernel.org/r/20200718070246.338016-1-christophe.jaillet@wanadoo.fr Signed-off-by: Greg Kroah-Hartman

misc: hpilo: switch from 'pci_' to 'dma_' API

2020-07-23T10:56:48+00:00

The wrappers in include/linux/pci-dma-compat.h should go away. The patch has been generated with the coccinelle script below and has been hand modified to replace GFP_ with a correct flag. It has been compile tested. When memory is allocated in 'ilo_ccb_setup()' GFP_ATOMIC must be used because a spin_lock is hold in 'ilo_open()' before calling 'ilo_ccb_setup()' @@ @@ - PCI_DMA_BIDIRECTIONAL + DMA_BIDIRECTIONAL @@ @@ - PCI_DMA_TODEVICE + DMA_TO_DEVICE @@ @@ - PCI_DMA_FROMDEVICE + DMA_FROM_DEVICE @@ @@ - PCI_DMA_NONE + DMA_NONE @@ expression e1, e2, e3; @@ - pci_alloc_consistent(e1, e2, e3) + dma_alloc_coherent(&e1->dev, e2, e3, GFP_) @@ expression e1, e2, e3; @@ - pci_zalloc_consistent(e1, e2, e3) + dma_alloc_coherent(&e1->dev, e2, e3, GFP_) @@ expression e1, e2, e3, e4; @@ - pci_free_consistent(e1, e2, e3, e4) + dma_free_coherent(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_map_single(e1, e2, e3, e4) + dma_map_single(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_unmap_single(e1, e2, e3, e4) + dma_unmap_single(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4, e5; @@ - pci_map_page(e1, e2, e3, e4, e5) + dma_map_page(&e1->dev, e2, e3, e4, e5) @@ expression e1, e2, e3, e4; @@ - pci_unmap_page(e1, e2, e3, e4) + dma_unmap_page(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_map_sg(e1, e2, e3, e4) + dma_map_sg(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_unmap_sg(e1, e2, e3, e4) + dma_unmap_sg(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_single_for_cpu(e1, e2, e3, e4) + dma_sync_single_for_cpu(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_single_for_device(e1, e2, e3, e4) + dma_sync_single_for_device(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_sg_for_cpu(e1, e2, e3, e4) + dma_sync_sg_for_cpu(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_sg_for_device(e1, e2, e3, e4) + dma_sync_sg_for_device(&e1->dev, e2, e3, e4) @@ expression e1, e2; @@ - pci_dma_mapping_error(e1, e2) + dma_mapping_error(&e1->dev, e2) @@ expression e1, e2; @@ - pci_set_dma_mask(e1, e2) + dma_set_mask(&e1->dev, e2) @@ expression e1, e2; @@ - pci_set_consistent_dma_mask(e1, e2) + dma_set_coherent_mask(&e1->dev, e2) Signed-off-by: Christophe JAILLET Link: https://lore.kernel.org/r/20200718070224.337964-1-christophe.jaillet@wanadoo.fr Signed-off-by: Greg Kroah-Hartman

hpilo: Replace one-element array with flexible-array member

2020-07-14T16:21:25+00:00

There is a regular need in the kernel to provide a way to declare having a dynamically sized set of trailing elements in a structure. Kernel code should always use “flexible array members”[1] for these cases. The older style of one-element or zero-length arrays should no longer be used[2]. For this particular case, it is important to notice that the cachelines change from 7 to 6 after the flexible-array conversion: $ pahole -C 'fifo' drivers/misc/hpilo.o struct fifo { u64 nrents; /* 0 8 */ u64 imask; /* 8 8 */ u64 merge; /* 16 8 */ u64 reset; /* 24 8 */ u8 pad_0[96]; /* 32 96 */ /* --- cacheline 2 boundary (128 bytes) --- */ u64 head; /* 128 8 */ u8 pad_1[120]; /* 136 120 */ /* --- cacheline 4 boundary (256 bytes) --- */ u64 tail; /* 256 8 */ u8 pad_2[120]; /* 264 120 */ /* --- cacheline 6 boundary (384 bytes) --- */ u64 fifobar[1]; /* 384 8 */ /* size: 392, cachelines: 7, members: 10 */ /* last cacheline: 8 bytes */ }; $ pahole -C 'fifo' drivers/misc/hpilo.o struct fifo { u64 nrents; /* 0 8 */ u64 imask; /* 8 8 */ u64 merge; /* 16 8 */ u64 reset; /* 24 8 */ u8 pad_0[96]; /* 32 96 */ /* --- cacheline 2 boundary (128 bytes) --- */ u64 head; /* 128 8 */ u8 pad_1[120]; /* 136 120 */ /* --- cacheline 4 boundary (256 bytes) --- */ u64 tail; /* 256 8 */ u8 pad_2[120]; /* 264 120 */ /* --- cacheline 6 boundary (384 bytes) --- */ u64 fifobar[]; /* 384 0 */ /* size: 384, cachelines: 6, members: 10 */ }; Lastly, remove unnecessary parentheses in fifo_sz() and fix the following checkpatch.pl warning for the whole fifo structure: WARNING: please, no spaces at the start of a line [1] https://en.wikipedia.org/wiki/Flexible_array_member [2] https://github.com/KSPP/linux/issues/79 Tested-by: kernel test robot Link: https://github.com/GustavoARSilva/linux-hardening/blob/master/cii/kernel-ci/hpilo-20200714.md Signed-off-by: Gustavo A. R. Silva Link: https://lore.kernel.org/r/20200714154449.GA26153@embeddedor Signed-off-by: Greg Kroah-Hartman

misc: hpilo: Do not claim unsupported hardware

2019-02-27T15:00:21+00:00

CL2600/CL2800 servers leveraged Proliant hardware but are targeted to a different market segment and come with a different firmware base. Based upon targeted market needs, the servers de-featured certain aspects of iLO. As a result, hpilo driver still claims the hardware but is not functional, so we decided to blacklist it with SSID 0x0289 to reduce confusion to customers. Signed-off-by: Matt Hsiao Signed-off-by: Greg Kroah-Hartman

misc: hpilo: Exclude unsupported device via blacklist

2019-02-27T15:00:20+00:00

Instead of having explicit if statements excluding devices, use a pci_device_id table of devices to blacklist. HPE will put out minor updates to the iLO using the same device info except for the subsystem device id. hpilo driver takes the approach to claim based upon {Vendor, Device, SubVendor} and it allows old software to work on new hardware without patching. As our primary way to support our customers is via distros, the patching process could take months to go upstream and then backported to multiple releases of multiple distros. This approach worked fairly well as this is only the second time in 10+ years that we need to blacklist an instance. Signed-off-by: Matt Hsiao Signed-off-by: Greg Kroah-Hartman

vfs: do bulk POLL* -> EPOLL* replacement

2018-02-11T22:34:03+00:00

This is the mindless scripted replacement of kernel use of POLL* variables as described by Al, done by this script: for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'` for f in $L; do sed -i "-es/^$[^\"]*$$\$/\\1E\\2/" $f; done done with de-mangling cleanups yet to come. NOTE! On almost all architectures, the EPOLL* constants have the same values as the POLL* constants do. But they keyword here is "almost". For various bad reasons they aren't the same, and epoll() doesn't actually work quite correctly in some cases due to this on Sparc et al. The next patch from Al will sort out the final differences, and we should be all done. Scripted-by: Al Viro Signed-off-by: Linus Torvalds

Merge tag 'char-misc-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2018-02-01T18:31:17+00:00

Pull char/misc driver updates from Greg KH: "Here is the big pull request for char/misc drivers for 4.16-rc1. There's a lot of stuff in here. Three new driver subsystems were added for various types of hardware busses: - siox - slimbus - soundwire as well as a new vboxguest subsystem for the VirtualBox hypervisor drivers. There's also big updates from the FPGA subsystem, lots of Android binder fixes, the usual handful of hyper-v updates, and lots of other smaller driver updates. All of these have been in linux-next for a long time, with no reported issues" * tag 'char-misc-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (155 commits) char: lp: use true or false for boolean values android: binder: use VM_ALLOC to get vm area android: binder: Use true and false for boolean values lkdtm: fix handle_irq_event symbol for INT_HW_IRQ_EN EISA: Delete error message for a failed memory allocation in eisa_probe() EISA: Whitespace cleanup misc: remove AVR32 dependencies virt: vbox: Add error mapping for VERR_INVALID_NAME and VERR_NO_MORE_FILES soundwire: Fix a signedness bug uio_hv_generic: fix new type mismatch warnings uio_hv_generic: fix type mismatch warnings auxdisplay: img-ascii-lcd: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE uio_hv_generic: add rescind support uio_hv_generic: check that host supports monitor page uio_hv_generic: create send and receive buffers uio: document uio_hv_generic regions doc: fix documentation about uio_hv_generic vmbus: add monitor_id and subchannel_id to sysfs per channel vmbus: fix ABI documentation uio_hv_generic: use ISR callback method ...

misc: hpilo: Use SPDX-License-Identifier

2017-12-07T17:45:31+00:00

SPDX-License-Identifier is used for the hpilo. Signed-off-by: Dhaval Shah Signed-off-by: Greg Kroah-Hartman

the rest of drivers/*: annotate ->poll() instances

2017-11-28T16:06:58+00:00

Signed-off-by: Al Viro